Dust separator



'of ther Patented Feb; 28; 1933 UNITED STATES CHRISTIAN COUPLED, F PARIS, FRANCE DUST SEPARATOR Application filed May 15, 1931, Serial No. 537,716, and in Belgium Kay 17, 1930.

The present invention relates to separators otary type and, more particularly, to those of the type used for separating dust from air or other gases.

One of its objects is to provide apparatus of this kind comprising a perforated rotatable drum which is traversed by the fluid to be treated, moving towards-the axis of said drum, and. means to convey the fluid to the discharge end of the drum, consisting of roguide, mounted being connected directly to shaft tatable means such as a spiral in the interior of said drum.

\ Other objects will appear in the course of the detailed description now to be given with reference to the accompanying drawing, in

w ich: V Fig. 1 is an axial section through one cm- 'bodiment of the invention.

Flg. 2 is an elevation of the structure illustrated in Fig. I with certain parts removed.

Referring to Figs. 1 and 2 of the drawing,

there is shown an assembly composed of the following elements a casing a having at least -enters into said casing; a separating member g constituted by a lattice or perforated drum or by a cloth or similar filter, mounted in such a manner, in said casing, that it could be rotated with the shaft e;'a discharge conof volute form communicating with one end of said drum, via opening formed in a plate 12 mounted to rotate with the drum andadapted to prevent the dust laden gas coming from/0 from passing directly into dlscharge conduit 7; a ventilator in said discharge conduit and composed of a plurality of inclined in the opening 0 so that the gas is forced through the drum and delivered through said opening 0 into volute f means to convey screw m mounted 03 mounted in theinterior'of the drum; and a hopper 2' adapted to receive the separated dust discharged through an opening a a plate 7' being preferably interposed to give to the dust particles a proper direction.

Said assembly may becompleted, in the special case where hot laden gases are tobe treated, by a sleeve is mounted on, and concentrically with, shaft e, a cooling fluid such as air or water being drawn therethrough by a ventilator Z. In such a case, elements 9 and d are mounted on sleeve 70 instead of 6. rom the forgoing description it will at once be seen that, in operation, the dust laden gas entering'at 0 traverses the drum 9 and is discharged through the opening 0 into the volute F. The dust particles deposit on the surface of said drum, and are thrown back toward the periphery of the casing, be; ing then collected into the hopper i.

he screw m permits of obtaining a proper distribution of the gas in the interior of the drum and, moreover, prevents the latter from speed different from that of said shaft.

From the foregoing description,it will at once be seen that the dust laden gas moves centripetally with relation to the dust sepa-' rating structures, while the purified air moves centrifuga-lly. Dust separators of this type are found to operate very much more efficiently than those in which circulation takes indicated.

vWhat I claim is 1'. An appartus of the class described comprising a shaft, a filtering in spaced relation to said shaft, means for guiding a dust laden gas against the external periphery of said filtering element, a discharge conduit, a ventilator mounted on said and operative to draw gases from the interior of said filteringelement toward said discharge conduit, and a rotatable conveyer mounted in the interior of said filtering element. I

place in the direction opposite to that just screw m could be rotated at a element mounted 2. A structure as defined in claim 1 in combination with a sleeve mounted in spaced relation to said shaft, and means for circulating a cooling fluid in the space between said sleeve and said shaft.

3. An apparatus of the class described comprising a shaft, a filtering element mounted in spaced relation to said shaft, means for guiding a dust laden gas against the external periphery of said filtering element, a discharge conduit, a ventilator mounted on said shaft and operative to draw the gas from the interior of said filtering element toward said discharge conduit, a sleeve mounted in space relation to said shaftin the interior of the filtering element, means for circulating a cooling fluid in the space between said sleeve and said shaft and a rotatable conveyor mounted in the space between said sleeve and said filtering element.

4. An apparatus of ti c class described, comprising a shaft, a perforated mounted in spaced relation to said shaft, a casing enclosing said shaft and said drum and having an inlet port for the entering of the dust laden gas, a ventilator mounted in a discharge conduit disposed at one end 0 the said drum and adapted to draw the gas from the interior of the drum, separating means adapted to rotate with said drum and to prevent dust laden gas from passing directly into said discharge conduit, and a rotatable screw mounted in the interior of said drum and adapted to convey the purified gas toward the discharge conduit.

In testimony wivlh C RISTIAN COUPARD.

drum

ereof I afiix my signature. 

